Sanitary napkin



FIG. 1 is a top plan view of a sanitary napkin embodying our design;

FIG. 2 is a right side view thereof, the left side view being a mirrorimage in appearance;

FIG. 3 is a bottom view thereof;

FIG. 4 is a front view thereof; and,

FIG. 5 is a back view thereof.

The ornamental design for a sanitary napkin, as shown and described.